zadorozny



W. ZADOROZNY.

' ALARM LUCK.

APPLICATION FILED MAR. 13. 1919.

l/l/I/E/I/TOR VVZ zadomzzqy- 126, A TTOR/VEY 2 SHEETS-SHEET 1.

Patented N 0v. 18, 1919.

'W. ZADOHOZNY.

ALARM LOGK.

APPLICATION FILED MAR-13,1919.

mm W m w W 4 Nu I m m rd V? UNITED STATES PATENT OFFICE.

WASYL ZADOROZNY, OF MEACI-IAM, SASKATCHEWAN, CANADA, ASSIGNOR OF ONE-HALF T TONY ZYG'REL, OF HAMILTON, ONTARIO, CANADA.

. ALARM-LOCK.

Application filed March 13, 1919.

To all whom it may concern:

Be it known that I, WAsYL'ZAoonozNY, a OItlZBIL of Austria, residlng at Meacham,

' Province ofSaskatchewan, and Dominion of Canada, have invented certain new and useful Improvements in Alarm-Locks, of which the following is a specification.

This invention relates to improvements in locks, such as are applied to the doors of dwellings and the like, to prevent unwarranted intrusion.

The principal object of the invention is to provide a lock which may be operated with an apparently ordinary key, in the usual manner, but upon an attempt to manipulate or turn the lock with an improper key, aloud audible alarm is given, suliicient to deter and frighten an intruder from further attempts to release the look.

A. further object is to combine with the alarm an electrical operated bell, which is caused to continuously ring after the first alarm has been given.

These and other like objects are attained by the novel construction and combination of parts hereinafter described and shown in the accompanying drawings, forming a material part of this disclosure, and in which Figure 1 is a vertical transverse sectional view taken through a lock made in accordance with the invention.

Fig. 2 is top plan view of the lock.

Fig. 3 is a vertical sectional view taken on line 3--3 of Fig. 1. p

Fig. 4 is a similar vertical sectional view taken on line 44 of Fig. 1.

Fig. 5 is a fragmentary sectional view taken on line 5-5 of Fig.

Referring to the drawings, the door or part to which the lock is attached is indicated by the numeral 10, the j amb 11 carrying the keeper 12, through which the bolt 14 enters the recess 15, partially covered by the keeper.

Formed through the door 10 is an opening 16, receptive of the key stem 17, having an operable extending handle 18 and a ward 19, in which is formed a transverse recess 20.

This ward, after being entered through the opening 16, is adapted to make contact with the angular sides 22 or 23, of a V shaped recess formed in the lower edge of the lock bolt 14, the outer end of which passes through an opening appropriately formed in the casing 25, while its inner end Specification of Letters Patent.

Patented Nov. 18, 1919.

Serial No. 282,431.

is guided in the lllgS 26 and 27, tormed with the lock body.

This body or casing has a raised rectangular portion 28 constituting a supplementary plate, normally covered by a plate 29, held at one end by the hinges 30, and a spring detent 31 at the opposite edge. The lower inner portion of the body is solid and has a plurality of vertical, cylindrical openings arranged in parallel at uniformly spaced intervals apart, the same being adapted to contain blank gun cartridges 31, the heads of which rest upon the upper interior surface of the solid block portion, and are held thereon by a plate 32, formed with. the cover 29, this plate having a plurality of openings 33, adapted to receive the conical points 34 of detonators, the stems 35 of which pass through alined openings formed in the extendingelements 36 of the cover plate 29, these detonators being normally pressed downward by encircling coiled compression springs 38 one end of which abuts against fixed collars 39 on the stems 85 and the other ends against the lower portion of the extension 36.

Formed transversely across the upper ends of the stems 35 are narrow slots receptive of portions of the plate 40, held to the extension 36 by the screws 41, in such manner as to hold the detonators normally in a raised position, the latter passing through elongated slots formed in the plate, as do also the screws 41, thereby permitting the plate to move endwise within the extension 28.

Pivoted upon a pin 44, set in the casing, is a lever having its upper arm 45 engaged with the plate 40, so that upon movement being transmitted to the lever, as to cause the plate to shift longitudinally. The other arm 46 of the lever is drawn normally outward, against a fixed pin 48 due to the pull of a tension spring 47.

Thus it will be seen that when a key not provided with the slot 20 is turned within the key opening, while it may operate the lock bolt 14, it will make contact with the lower arm 46 of the lever, pressing it to the rear, while the upper arm 45 moves the plate 40 outward, freeing the detonators which, due to the effect of the springs 38 are thrust smartly downward, the conical points passing through the openings 33, exploding the cartridges in a manner which will be clearly understood, the explosion making so much noise as to deter a burglar or other unauthorized person from further attempts at negotiating the lock.

An electrical current from any convenient source of supply is connected with the casing by the wires 50 and 51 through the binding posts 52 and 53, the former being insulated by fiber bushings 54, the current passing through the screw point to a spring contact 55, secured to an arm 56, carrying a hammer 57, adapted to make contact with the bell 58, fixed on the top of thelock casing.

The arm 56 is pivoted on the pin 59 and normally pressed outward by a fiat spring 60, except when the magnets 61 are energized, actuating the arm 56 in the manner of an ordinary electric bell. A circuit is formed by a spring contact 62, when in engagement with another contact 63, carried on one of the detonator pins 35, adjacent to the collar 39, when the point 3a has been forced downwardly into the opening 33, while at other times, the current has noveffect upon the bell mechanism.

From the foregoing it will be seen that an alarm lock has been disclosed, in which, if an improper key be inserted, is caused a plurality of cartridges to be detonated, adapted to frighten an intruder and at the same time causing the bell 53 to ring until such time as the circuit is opened by those in charge of the lock.

Having thus described my invention what I claim as new and desire to secure by Letters Patent, is-

1. In an alarm lock, the combination with. a casing, a bolt slidable therein and a cover plate for said casing, of a supplementary plate over said cover plate, cartridge receivers in the lower portion of said cover plate, an inwardly extending element formed with said cover plate adapted to hold the cartridges in position, a plurality of detonators, means for normally holding said detonators in a raised posit-ion, and means operated by the movement of an improper key for liberating said holding means.

2. In an alarm lock, the combination with a lock casing having a bolt slidable therein, of a plurality of cartridges arranged in said casing, detonators therefor, means for holding said detonators in said casing, a plate for holding said detonators when in a raised position, and a lever pivoted in said casing, one arm ofsaid lever operatively engaged with said holding plate, the other arm of said lever being engageable with the key used to operate the lock.

In testimony whereof I have aflixed my signature.

WASYL ZADOROZNY. 

